WE'LL GIVE YOU A PEEK. TRAFFIC MOVING PRETTY WELL. DRIVE TIMES REFLECTING THAT. A FOUR-ALARM FIRE IN A MEDICAL BUILDING RIGHT NEXT TO A MAJOR HOSPITAL. THIS HAPPENED IN CENTRAL. A HUGE RESPONSE FROM FIRE CREWS AFTER THIS FIRE BROKE OUT IN THE MEDICAL BUILDING. PITTSBURGH "ACTION NEWS" 4 REPORTER AMBER NICOTRA IS LIVE WITH AN UPDATE FOR US. THE FIRE IS OUT. NOBODY WAS HURT. CREWS WERE HERE FOR QUITE SOME TIME WELL AFTER THE FIRE STARTED. IT HAPPENED AT A MEDICAL BUILDING FURTHER DOWN THE STREET FROM WHERE WE'RE STANDING. YOU CAN GET A CLOSER LOOK AT THE CHALLENGES FIREFIGHTERS FACED. IT STARTED INSIDE A MEDICAL BUILDING NEXT TO MERCY HOSPITAL. SOMEONE SPOTTED FLAMES SHOOTING FROM THE BUILDING AROUND 1:30 THIS MORNING AND CALLED 911. WHEN FFRTS ARRIVED, THEY DISCOVERED MOST OF THE DAMAGE ON THE FIFTH FLOOR. RIGHT NOW IT'S UNCLEAR HOW THE FIRE STARTED BECAUSE IT REMAINS UNDER INVESTIGATION. NO ONE WAS HARMED IN THE FIRE. THE FIRE STARTED ON THE FIFTH FLOOR IN AN OFFICE BUILDING. AND IT WENT THROUGH A GOOD PORTION OF THE FIFTH FLOOR. Reporter: MOST OF THE DAMAGE